{{indexmenu_n>4}}

===== Data Connections =====

See [[:opencpn:opencpn_user_manual:faq#flatpak_data_port_connection_issues|Data Port Connection Issues]]

There are some things related to serial data ports, in particular on Flatpak.

  - The port must be accessible. See [[https://github.com/OpenCPN/OpenCPN/blob/master/LINUX_DEVICES.md|https://github.com/OpenCPN/OpenCPN/blob/master/LINUX_DEVICES.md]], the chapter on Device Access.
  - Even if the port is accessible it might not be visible in the UI. Two solutions.
  - The first is to write the name of the device, perhaps something like /dev/ttyUSB0 in the GUI (one don't have to select from the drop-down list, it's possible to enter the device name as well)
  - The second is to create a device link as described in [[https://github.com/OpenCPN/OpenCPN/blob/master/LINUX_DEVICES.md|https://github.com/OpenCPN/OpenCPN/blob/master/LINUX_DEVICES.md]] the chapter on Fixed Device Names. Such links are visible in the GUI

